Department of Radiology, Mayo Clinic, Rochester, Minnesota 55905, USA.
J Magn Reson Imaging. 2010 Jun;31(6):1395-401. doi: 10.1002/jmri.22183.
To develop and test an MRI-based imaging technique for the localization of the functional compartments of the functionally finger-specific, yet anatomically indistinct, flexor muscles of the hand.
A total of six normal healthy volunteers were involved in five studies in which individual fingers were vibrated with mechanical actuators and the resultant motion within the corresponding functional compartments of the flexor muscles, mechanically transferred through the structurally connected tendons, was imaged with a phase-contrast MR imaging technique that is highly sensitive to cyclic motion. The motion amplitude and relative phase relationship between the functional compartments of various muscles and fingers were obtained and analyzed from these images as a means to differentiate the various subcompartments.
The results show that this technique provides a detailed mapping of the regions of the complex flexor muscle compartments that correspond to each digit for both the flexor digitorum profundus and the flexor digitorum superficialis. The results also demonstrate the presence of mechanical interdependence between the flexor muscles.
It is concluded from the results that localization of the finger-specific subcompartments of the forearm flexor muscles can be performed with this technique.
开发并测试一种基于 MRI 的成像技术，用于定位手部功能特定但解剖上无明显区别的屈肌肌功能区。
共有 6 名正常健康志愿者参与了 5 项研究，这些研究使用机械致动器对手指进行振动，通过结构相连的肌腱将相应的屈肌肌功能区的运动传递，然后使用对周期性运动高度敏感的相位对比 MRI 技术对其进行成像。从这些图像中获得并分析了各肌肉和手指的功能区的运动幅度和相对相位关系，以此来区分各亚区。
结果表明，该技术能够对深层和浅层屈指深肌的复杂屈肌肌区进行详细的定位，与每个手指相对应。结果还表明，屈肌之间存在机械相互依存关系。
从结果得出结论，该技术可用于定位前臂屈肌的手指特异性亚区。
